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led selection circut Answered

I am building a 500 DVD library shelf.  I'd like to be able to select a number, on maybe a keypad etc, and have just one led turn on on one location of one of the shelves, indicting the location of that DVD.  As usual and understandable, I would like said system to be as inexpensive as possible.  I'd like to run it off of a battery.  I can do it with three selection switches and an individual set of wires to each LED.. Just seems like some IC would work if I knew a little more, and maybe reduce some of the wiring.  Like maybe an IC under each shelf that could select which led on that shelf to turn on.  I intend to drill small holes into the face of the shelves and insert each led about 5/8" apart with the wiring run back through and then under each shelf.  Lots of tiny wires and lots of LEDs but if I could make it inexpensive enough it would not only help in finding a movie to watch but it would aid in putting it away later.  Since to some extent, each DVD is variable in size, the location of any DVD is a little dynamic, but any one LED should be close enough to guide me. If you don't have time to fill in all the knowledge I am missing, any place that you can point me would be appreciated... It seems to me like it may take a number of IC to make several selection to power up just one LED>   thanks Dave

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steveastrouk
steveastrouk

9 years ago

Working with 500 of anything is a lot of work.

This really needs to be done with a little microcomputer, and a circuit board on each shelf

How wide are your shelves ?

Steve

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oneofsharp
oneofsharp

Reply 9 years ago

Steve, I haven't built the shelves yet. If I do decide to do something with LED's I would just design around them. You have a point. I may just have to locate one led for every 5 dvd's. That would still guide me but reduce the problem. Still say 400 divided by 5 is still 80. My house is filled with computers so I could build a unit that would key the dvd from the spreadsheet where i keep them organized. That just seemed more complicated than necessary. I keep looking around for an idea but have found nothing similar. On most equipment the uses LED's for some sort of indication of action or selection, the LED is just powered by individual switches. Thanks for the reply dave

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steveastrouk
steveastrouk

Reply 9 years ago

Think of it as not that hard to do if you really want to....

Steve